Example 5.8 We continue with the running Example REF . By [1]} Example \(1.21\) , the mirror algebra \(R_{(X,D)}\)  is isomorphic to
\(R_{(X,D)} = {k}[NE(X)][\vartheta _{v_1},\vartheta _{v_2},\vartheta _{v_{1,1} + v_{2,1}},\vartheta _{v_{1,2}+v_{2,2}}]/(\vartheta _{v_1}\vartheta _{v_2} - \vartheta _{v_{1,1} + v_{2,1}} - \vartheta _{v_{1,2}+v_{2,2}}, \vartheta _{v_{1,2}+v_{2,2}}\vartheta _{v_{1,1} + v_{2,1}} - t\vartheta _{v_1}).\) 
